[AceJohnny2]

I agree that Keychain Access kinda sucks, but it's because Apple UI paradigm for it is different. For them, the Password Manager isn't a separate entity that's a source for copy-pasting passwords into arbitrary apps, instead it's a core Framework of the OS that apps integrate with. As such, it doesn't really have "its own UI" because each app provides the UI.

Of course, that does mean that it's less universally convenient like the other commercial apps.

As usual with Apple stuff, I guess they're not interested in making it a better separate app because their value proposition is "use our frameworks and get this feature 'for free' "